What people love (and don’t love)
What people love
- Extremely sharp and aggressive cutting performance, especially on steel.
- Good value with quality and durability for drilling hard metals like stainless steel and cast iron.
- Works well for precision drilling and producing clean holes.
- Long-lasting when used with proper technique and lubrication.
- Suitable for demanding materials such as brake rotors and super duty steel parts.
What people don’t love
- Bits can wear out quickly after a few holes in mild steel.
- Requires careful handling to avoid damage to the flutes and to prolong life.
- Not ideal for heavy pressure; lighter, steady drilling is recommended.
Sharp, durable cobalt drill bits ideal for metalwork, but require careful use to maximize lifespan.
Summary based on customer review evidence.
Quick facts
- Brand: BECOLLO
- Price: USD 16.99
- Rating: 4.50 (651 reviews)
If you drill tough materials and need a reliable, repeatable hole size, the BECOLLO 27/64″ cobalt drill bit set gives you three matching M35 jobber-length twist bits ready for metalwork. The cobalt steel construction is designed to boost wear and heat resistance, helping the bits hold up better when drilling in harder metals.
You can view the current price and full details on Amazon here.
Each bit uses a fully ground finish for a smoother surface, reduced friction, and faster cutting. The 135° split point is built for easy self-centering starts, helping reduce walking and skating across the work surface—especially helpful on stainless steel and cast iron.
You’ll receive 3 pieces of 27/64″ drill bits packed in a plastic case for convenient storage and transport.
- M35 cobalt (5%) high speed steel to increase wear and heat resistance
- 27/64″ cutting diameter (10.67 mm) in a 3-piece set for backups and consistent sizing
- Fully ground (uncoated) twist design to reduce friction and support faster cutting
- 135° split point for self-centering starts and reduced walking
- Recommended for hard metals like stainless steel and cast iron (also works on other softer materials)
Cheaper Alternatives From China
We found similar items you may like from China. Note, prices and availability can change and these may not actually be cheaper!
Note links may be affiliate links.
